I'm going to pick up a fuel pressure guage soon. The fuel regulator isn't painted black, its a greyish silver, but it looks very old. I pulled the vacuum lines and found nothing, but I haven't hard the car on in a few days. Ill keep you updated if you find anything else out let me know I really appreciate you itsa300zx. I also wanna state that the problem got worse over couple of days. The first day it was bouncing off 5K rpms like it was cutting out, then it started doing it at 2k-3k. So if my timing is good, spark is good, and airflow/vacuums are good. That jus leaves out fuel I believe would be the only thing to make an engine cut out and have a hard time starting. right???? lol thanks tho ur da bomb.com